Ammonium ions treated with sodium hydroxide produce which gas and observation?

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Multiple Choice

Ammonium ions treated with sodium hydroxide produce which gas and observation?

Explanation:
When a weak acid like the ammonium ion is treated with a strong base, the base removes a proton from the ammonium ion. This produces ammonia gas and water: NH4+ + OH− → NH3(g) + H2O. Because ammonia is volatile, it escapes as a gas, giving the observed gas evolution. Neutralization of the acid (NH4+) by the base (OH−) is exothermic, so the solution also warms. So the correct observation is ammonia gas produced with the solution warming. Hydrogen or oxygen gases would require different reactions, and a reaction does occur here, so stating no reaction would be incorrect.

When a weak acid like the ammonium ion is treated with a strong base, the base removes a proton from the ammonium ion. This produces ammonia gas and water: NH4+ + OH− → NH3(g) + H2O. Because ammonia is volatile, it escapes as a gas, giving the observed gas evolution. Neutralization of the acid (NH4+) by the base (OH−) is exothermic, so the solution also warms. So the correct observation is ammonia gas produced with the solution warming. Hydrogen or oxygen gases would require different reactions, and a reaction does occur here, so stating no reaction would be incorrect.

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